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- Some of his engines were London Science Museum
- Some parts of it still survive in the Museum of the History of Science in Oxford
- His first engine had composed of around 25,000 parts, weigh fifteen tons (13,600 kg), and would have been 8 ft (2.4 m) tall
- He began in 1822 with what he called the difference engine
- Britan researchers hope to complete Plan 28 by the 150th anniversary of Babbage's death, in 2021
